title: Inferring the quality of hospital treatment for COPD by mortality; caution is needed.
authors.forename: M D L
authors.initials: MD
authors.lastname: Morgan
mesh_terms: D005260:Female; D017052:Hospital Mortality; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D029424:Pulmonary Disease, Chronic Obstructive / Q000401:mortality*
keywords: COPD Exacerbations; COPD epidemiology